NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum Organization subpart

County of Sonoma

Adult Mental Health Clinic/Center in Santa Rosa, CA · enumerated 2007 · authorized official Ruby Zhang, Department Analyst.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1245444868

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name County of Sonoma
Other name <Unavail>
Parent organization County of Sonoma
Practice address 2245 Challenger Way Ste 100, Santa Rosa, CA, 95407
Phone (707) 565-4900
Enumeration date May 10, 2007
Last updated in NPPES May 23, 2023

Taxonomy & classification

261QM0850X Adult Mental Health Clinic/Center Ambulatory Health Care Facilities Primary

Authorized official

Name Ruby Zhang
Title Department Analyst
Phone (707) 565-7846

Other identifiers

Identifier Type State Issuer
4941 Other CA PROVIDER NUMBER

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

What is a Type 2 NPI?
A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.
What type of organization is County of Sonoma?
County of Sonoma is registered in NPPES as a Adult Mental Health Clinic/Center (its primary provider taxonomy).

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-05-23.